356 RIGHT THORACIC DUCT. 



lacteal vessels. Within the thorax it is joined by a large lymphatic 

 trunk from the liver, and in its course through the posterior medias- 

 tinum, receives the lymphatic vessels both from the viscera and 

 from the parietes of the thorax. At its curve forwards in the neck 

 it is joined by the lymphatic trunks from the left side of the head 

 and neck, left upper extremity, and from the upper part of the 

 thorax, and thoracic viscera. 



The Ductus lymphaticus dexter is a short trunk which receives 

 the lymphatic vessels from the right side of the head and neck, 

 right upper extremity and right side of the thorax, and terminates 

 at the junction of the right subclavian with the right internal jugular 

 vein, at the point where these veins unite to form the right vena 

 innominata. It is provided at its termination with a pair of semi- 

 lunar valves, which prevent the entrance of blood from the veins. 





